Like starling murmurations, schooling fish are one of the world’s most wondrous natural phenomena. Not to be confused with shoaling fish (which refers to fish who gather to swim together socially), schooling fish are defined as a large group of fish that swim synchronously.

Swimming in a school allows fish to protect themselves from predators, improve foraging, and swim more efficiently. While scientists are still working to better understand fish schooling, experiments over the past few decades have provided much information about how (and why) fishes form schools.

For one, schooling is most likely a genetic behavior. In fact, a combination of behavioral traits and unique sensory abilities allow fish to move fluidly and in sync with the school. While schooling fish make moving in perfect time look easy, there are various factors that the fish must instantaneously account for; the fish must quickly respond to water currents and react instantly to changes within the group. Scientists have discovered that fish base their decisions on a synthesis of where all the fish in its field of view are headed, instead of following its nearest neighbors.

The process of vaccination involves injecting a small amount of deactivated or dead virus into the body so that the body’s natural defenses can strengthen an immunity to it. It’s kind of like getting the other team’s playbook before the big game. These deactivated forms of viruses are used to prevent an extensive list of diseases, including pneumonia, whooping cough, influenza, and tuberculosis–preventable diseases that kill millions of people every year.

It’s winter. It’s cold. You’re miserable. Since you’re likely spending more time indoors, why not learn a little bit more about how wintry conditions make it so you can see your breath–and happiness–exiting your body?

According to the European Space Agency, this Planck spacecraft-captured image reveals the shape of the Milky Way’s magnetic field. And, we might add, it looks oddly reminiscent of Vincent Van Gogh’s “Starry Night”.